.data
var1: .word 3
var2: .word 4
var3: .word 0x1234

.text
.global main

main: 
ldr r1, puntero_var1
ldr r1,[r1]
ldr r2, puntero_var2
ldr r2,[r2]
ldr r3, puntero_var3
add r0, r1 ,r2
str r0,[r3]
mov r1, r0
bx lr

mov r0, $1
     @pointer string to be printed in r1
mov r2, $4     @length of string in r2
mov r7, $4       @prepare to output to console 
swi $0

puntero_var1: .word var1
puntero_var2: .word var2
puntero_var3: .word var3
